Heat the oil in a wide saucepan or a frying pan with high sides. Sauté the onion cubes at low temperature until soft.
Clean the mushrooms, rinse if necessary and cut into slices. Add to the saucepan, stir. Also clean the oyster mushrooms and cut into very thin strips. Add to the saucepan and sauté over medium, heat until almost all liquid has evaporated.
Remove the skin from the garlic and press it over the mushrooms. Sprinkle with thyme and add tomato juice. Bring to the boil.
Season the sauce with salt and bell pepper, paprika and aceto balsamic vinegar. Rinse the chives, dry them, chop them and finally sprinkle them over the mushroom sauce.
Tip: As an alternative to the fresh chives, you can also use the freeze-dried.